name: nix

on:
  pull_request:
    branches: [ "main" ]
  push:
    branches: [ "main" ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
      with:
        extra_nix_config: |
          access-tokens = github.com=${{ github.token }}
    - run: nix flake check -L --show-trace --keep-going

  fmt:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
      with:
        extra_nix_config: |
          access-tokens = github.com=${{ github.token }}
    - run: nix fmt

  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
      with:
        extra_nix_config: |
          access-tokens = github.com=${{ github.token }}
    - uses: cachix/cachix-action@v14
      continue-on-error: true
      with:
        name: nixsgx
        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'

    - name: Build
      run: nix build -L